MPEC 2011-T23 : 2011 QG9
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M.P.E.C. 2011-T23 Issued 2011 Oct. 4, 14:17 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2011 QG9
Revision to MPEC 2011-Q21
Additional Observations:
K11Q09G C2002 07 14.38900 20 50 59.91 -24 41 10.2 oET023644
K11Q09G C2002 07 14.45241 20 50 56.44 -24 40 45.4 oET023644
K11Q09G C2002 07 15.37159 20 50 10.68 -24 34 39.1 21.1 RoET023644
K11Q09G C2002 07 15.39287 20 50 09.47 -24 34 30.3 20.3 RoET023644
K11Q09G C2002 07 15.41418 20 50 08.31 -24 34 21.4 oET023644
K11Q09G C2002 07 17.27679 20 48 27.58 -24 21 14.3 20.6 RoET023644
K11Q09G IC2002 07 17.34161 20 48 23.56 -24 20 46.4 oET023644
K11Q09G C2002 08 08.22600 20 17 33.74 -20 06 32.8 19.7 RoET023644
K11Q09G C2002 08 08.24720 20 17 31.43 -20 06 11.4 19.5 RoET023644
K11Q09G C2002 08 17.15066 20 01 59.99 -17 14 14.2 19.6 RoET023644
K11Q09G C2002 08 17.17157 20 01 57.68 -17 13 47.4 20.0 RoET023644
K11Q09G C2002 08 17.19237 20 01 55.44 -17 13 21.2 19.9 RoET023644
K11Q09G C2002 08 24.16725 19 50 39.07 -14 30 05.2 19.9 RoET023644
K11Q09G C2002 08 24.18846 19 50 37.00 -14 29 33.1 19.5 RoET023644
K11Q09G C2002 08 24.21002 19 50 34.90 -14 29 01.0 oET023644
Observer details:
644 Palomar Mountain/NEAT. Observers R. Bambery, E. Helin, S. Pravdo,
M. Hicks, K. Lawrence, R. Thicksten. Measurer R. J. Bouma. 1.2-m Schmidt
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
020714 644 3.59- 1.76- 020824 644 5.18- 3.28- MPO205929 -0.0020 day
Orbital elements:
2011 QG9 Earth MOID = 0.1902 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 MPC
M 347.56737 (2000.0) P Q
n 0.22043752 Peri. 73.28653 +0.90164872 -0.40502972
a 2.7140158 Node 310.33237 +0.28047018 +0.81446559
e 0.6049467 Incl. 11.47043 +0.32919001 +0.41544764
P 4.47 H 20.3 G 0.15 U 1
Residuals in seconds of arc
020714 644 0.4+ 0.2+ 110823 D90 0.1+ 0.2- 110829 474 0.3- 0.1+
020714 644 0.5- 0.2- 110823 D90 0.1- 0.3- 110829 474 0.1+ 0.1-
020715 644 0.4+ 0.1- 110823 D90 0.4+ 0.3- 110829 474 0.5- 0.4+
020715 644 0.3+ 0.0 110823 D90 0.1- 0.4- 110830 H21 0.1- 0.2-
020715 644 1.0+ 0.1+ 110823 595 0.3+ 0.7- 110830 H21 0.1+ 0.1-
020717 644 0.2+ 0.5+ 110823 595 0.8- 1.0- 110830 H21 0.3- 0.2-
020717 644 0.2+ 0.7+ 110824 H36 0.3- 0.1+ 110830 474 0.4- 0.1+
020808 644 0.3- 0.3- 110824 H36 0.2- 0.0 110830 474 0.1- 0.3+
020808 644 0.2+ 0.1- 110824 H36 0.2+ 0.1- 110830 474 0.3- 0.3+
020817 644 0.2- 0.1+ 110824 D90 0.4+ 0.1- 110902 474 0.0 0.4+
020817 644 0.8- 0.1+ 110824 D90 0.0 0.0 110902 474 0.1+ 0.3-
020817 644 0.4- 0.5- 110824 D90 0.1- 0.0 110902 474 0.1- 0.2+
020824 644 0.0 0.3- 110824 D90 0.0 0.2+ 110906 H21 0.4- 0.2-
020824 644 0.0 0.2+ 110825 157 0.3- 0.5- 110906 H21 0.1- 0.6-
020824 644 0.1+ 0.0 110825 157 0.8- 0.1- 110906 H21 0.3- 0.6-
110822 F51 0.1- 0.1- 110825 157 0.6- 0.2- 110906 H21 0.0 0.2-
110822 F51 0.0 0.2- 110825 204 0.3+ 0.2- 110912 H21 0.3- 0.1+
110822 F51 0.0 0.1- 110825 204 0.3- 0.1- 110912 H21 0.0 0.0
110823 H21 0.1+ 0.2- 110826 A78 0.1- 0.9- 110912 H21 0.0 0.2+
110823 704 0.6- 0.5+ 110826 A78 1.1+ 0.1- 110912 H21 0.4- 0.2+
110823 H21 0.5+ 0.1- 110826 A78 0.9+ 0.2+ 110913 H21 0.4+ 0.2+
110823 H21 0.7+ 0.2+ 110826 A78 (2.4+ 0.6+) 110913 H21 0.5+ 0.3+
110823 704 0.9+ 1.0+ 110828 H21 0.3+ 0.0 110913 H21 0.1- 0.3-
110823 704 0.0 1.9+ 110828 H21 0.2+ 0.1- 110914 H21 0.6+ 0.5-
110823 704 0.2+ 0.6+ 110828 H21 0.0 0.1- 110914 H21 0.4- 0.7+
110823 704 0.2+ 0.8+ 110828 H21 0.6- 0.2+ 111002 157 0.0 0.0
110823 704 0.5- 0.3+ 110828 807 0.5+ 0.1+ 111002 157 0.6+ 0.1+
110823 704 0.6- 0.2- 110828 807 0.6+ 0.4- 111002 157 0.0 0.1-
110823 704 0.1+ 0.0 110829 291 0.1- 0.1+
110823 704 0.2+ 0.0 110829 291 0.1+ 0.5+
Ephemeris:
2011 QG9 a,e,i = 2.71, 0.60, 11 q = 1.0722
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2011 09 04 20 10 05.6 +01 13 21 0.2803 1.2346 139.2 32.2 19.4
...
2011 09 19 19 53 25.0 +13 39 34 0.2512 1.1541 120.9 48.3 19.4
...
2011 09 27 19 50 16.0 +20 52 25 0.2424 1.1207 113.3 55.3 19.5
...
2011 10 03 19 51 04.6 +26 28 00 0.2378 1.1009 108.8 59.4 19.5
2011 10 04 19 51 29.9 +27 24 46 0.2372 1.0981 108.2 59.9 19.5
2011 10 05 19 52 00.3 +28 21 45 0.2366 1.0954 107.6 60.5 19.5
...
2011 10 11 19 56 55.8 +34 07 46 0.2336 1.0822 104.9 63.1 19.6
...
2011 10 19 20 09 20.3 +41 55 24 0.2315 1.0731 103.2 64.7 19.6
...
2011 11 03 21 01 37.7 +55 58 23 0.2344 1.0826 106.6 61.5 19.5
A. U. Tomatic (C) Copyright 2011 MPC M.P.E.C. 2011-T23
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